Stave-tapping-out apparatus.



F. A. WILKES.

STAVE TAPPING OUT APPARATUS.

APPLICATION TILED JULY 1, 1914.

Patented 0011.27, 1914.

THE NORRIS PETERS 70 PHOTO-LITHOU WASHINGTON, D. c.

UNITED STATES PATENT QFFTCE,

FRANK A. WILKES, 0F MILWAUKEE, 'W'ISOUNSIN, ASSIGNOR TO WISCONSIN BARREL 86 I COOPERAGE 00., 0F MILWAUKEE, WISCONSIN.

STAVE-TAPPING-OUT APPARATUS.

Specification of Letters Eatent.

Patented Oct. 27, 191a.

Application filed July 1, 1914. Serial No. 848,357.

Tapping-Out Apparatus; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention refers to oooperag'e and has for its object to provide a simple, economical and effective means for shaping or finishing the assembled and hooped barrel staves by expanding'the same uniformly to effect a smooth outside circumference whereby the opposed edges of the group of stares are perfectly seamed and matched in circular formation, which staves, under ordinary conditions, lap each other irregularly if not previously tapped out by hand, it being understood that to accomplish the desired re sult manual tapping out of the staves is now the method generally employed. The apparatus for accomplishing the desired re- "sult, as stated above, may be utilized as an attachment to any type of barrel-trussing machine, wherein the gearing can be employed for transmitting the necessary power to the driven elements of my attachment, or said apparatus may be designed as a unit, it being understood that any means within the knowledge of skilled mechanics for imparting motion to the working parts, is within the scope of my invention.

\Vith the above objects in view the invention consists in certain peculiarities of construction and combination of mechanical elements as set forth hereinafter with reference to the accompanying illustrations and subsequently claimed.

In the drawings Figure 1 represents a sectional elevation of a machine embodying the features of my invention. the section being indicated by line 11 of Fig. 2; ig. 2, a detailed cross-section of the same, the section being indicated by line 2-2 of Fig. 1, with parts broken away to more clearly illustrate certain details of construction, and Fig. 3, an enlarged sectional view of a head constituting one of the elements of my invention showing an adjustable stave-receiving seat in detail.

Referring by characters to the drawings, 1, 1,'indicate spindles which are mounted in suitable boxes having wormed or threaded ends 1, the threads on said ends being right andleft. These spindles are arranged to be rotated synchronously by any desired driving gear, not shown. The companion threaded ends have mounted thereon followers 2, 2, which followers are in threaded engagement with the threaded ends of the spindles and are arranged to be thus drawn toward each other or retracted coincident to movement of the wormed spindles in opposite directions. Extending through central apertures of the followers are plunger rods 3, 3, the rear ends of which plunger rods are also mounted in suitable bearings. The forward ends of the plunger rods carry chucking disks 4:, 4, whichv chucking disks constitute expander heads. The plungenrods carry adjustable collars 5 to which ends of coiled springs 6, 6, are at tached, the opposite ends of said springs being secured to the juxtaposed followers 2, 2. Thus it will be observed that a yielding connection between the expander heads or chucking disks and followers is effected through the springs, the tension of which may be varied by adjusting the collars 5, 5. As indicated in full lines in connection with the follower disk 2, a hooped setting head 7' is provided, which head is supported by guide-rods 8 that are in slidable union with the follower board. The hoop-setting heads 7 also carry pins 9 that extend through apertures with which the follower-board is provided and surrounding said pins are coiled springs 9, the same being interposed between the follower-board and head 7, whereby a yielding connection is effected between these elements. The hoop-setting heads form no part of my invention and are of ordinary type having sets of-hoopengaging fingers 10, 10, that are arranged to abut companion hoops A, A, at either end of a barrel and force the same to their correct position with relation to the assembled staves B. A pair of circular heads 11, 11, having central apertures therein are provided, which apertures are adapted to lit the plunger rods 3, 3, whereby the heads are in slidable union with said rods. Each head 11 is provided with a continuous series of radially disposed slots 12 adjacent to its periphery, which slots receive retaining bolts 12, each of the same being in threaded union with an-eared bracket 13. The feet .of each of these brackets are rectangular in form and are radially disposed flanges lt that extend from the face of the head. Thus the brackets may be adjusted in or out with relation to the axis of the head and fixed in such adjustment to compensate for variations in the dimensions of barrels. Each head is also provided with a circular flange 15 adjacent to its periphery, which flange constitutes a stave-receiving seat. In order to provide for adjustment with relation to this seat, the outer face of the flange 15, as best shown in Fig. 3, is inwardly tapered for the reception of a removable ring 15, it being understood that a series of such rings may be provided of different outer diameters, whereby variations in the dimensions of the barrels at their ends may be compensated for, These removable rings 15, as shown, may be se-, cured by countersunk bolts or screws 15.

Mounted between the ears of eachbracket is a radially dispose-d'expansion block 16, the

, shank of which is pivoted to the bracket ears by a stud 1'7.v Thus the expansion blocks are .free to swing upon their pivots in a radial direction, The blocks, as shown, are provided with obliquely disposed cam faces 16, which faces are engaged by the chuckingdisks 4:, 4t, respectively, whereby the blocks are expandedwhen the plunger rods 3 and 3 are moved toward each other where ex-. pansion blocks meet head to head as shown in Fig. 1, whereby each stave of the assemblage is subjected to positive pressure throughout its entire length.

In order to retract the two sets of expan-, sion blocks, each block of the companion series is provided with a tappet-finger 16 h exte s radi lly fr m the an of the block, as best shown in Fig. 1. Hence it is pp en that wh n the andr o h r ing disks 4, and t are retracted their peripheral edges will engage the tappet-fingers and thus cause the corresponding series of blocks to be retracted or nested in circular form of a reduced diameter,

m e egoing des ripti n it s m n fest that, in operation, the unfinished barrel, comprising the assembled staves bound by their hoops, is placed in the position shown in Fig. 1, while the mechanism, comprising the head expansion blocks and chucking mandrels, is retracted to a position clear of the ends of the staves. The heads are then moved forward to the position shown in Fig. 1, whereby the ends of the assembled staves B are seated about the flange 15 or ring 15' so as to, center the barrel, In this forward movement of the heads the expan: sion blocks are contracted, whereby they pan readily be inserted within the partly finished barrel, in which position the chucking disks 4: and ejare drawn toward the heads with their edges in engagement with the tappet fingers 16". The threaded or worm-carryguided between parallel J ing spindles 1, 1, are then revolved,'whereby the followers 2 and 2 are caused to be drawn toward the ends of the barrel, carrying with them the plunger rods. This movement causes the periphery of the chucking disks to engage the cam faces 16 of the expansion blocks, whereby the companion sets or series of the same are expanded, the expansive force applied thereto being yieldable, through the spring connection between the {follower boards and plunger rods. This movement of the chucking'disks toward each other will thus exert a positiveforce upon the chucking blocks, whereby their working faces 18 will engage the inner faces of the series of irregularly lapped staves and expand the same to a perfect circle of the cori'ect diameter to form, the desired outside smooth and even. surface upon the group of staves, the expansive force being opposed by the hoops. Thus the edges ofthe entire series are perfectly matched up to form smooth longitudinal seams, it being understood that the working faces 18 of'the chucking blocks are slightly curved to form the desired contour of the inner face of the l re .v 7

While I have shown and described, as one exemplification of my invention, an apparatus embodying specific details particularly designed as an attachment to a barrel truss ing machine, it should be understood that such details may be varied within the knowledge of skilledmechanics for accomplishing the desired result, without departing. from the spirit of my invention,

I claim:

1. A stave tapping out apparatus comprising a pair of alined spaced head's having annular staveercceiving seats, a series of pivoted radia ly dispo ed expans blocks m nt d upon each head, adapte 0 enter the ends of an assemblage of barrel staves, and a yieldable reciprocative expander head ngagea-ble with each seri s of locks whereby they are forced against said assemblage of stave/s,

2- A stav appingut apparat s come prising a pair of slidahle plungerrrods, followers connected to the plunger-rods, spind es in threaded n on with t fo owe heads in sl clabl union with the p ng rods having annular stave receiving seats, a series of expansion blocks in pivotal union i h, ac h ad, and chu king disks a r e by said plunger-rods for engagement with the expansion blocks. 7

A stave tapp ng out appa atus com prising a pair of'slidable plunger-rods, followers yieldably connected to the plungerd s, spindle in thr aded uni n W th th followers, heads in slidable unionv with the plunger rods having annular stave-receiving seats, a series of expansion hloeksinp votal union w1th each head, and chucking-disks carried by said plunger-rods for engagement with the expansion. blocks.

4. A stave tapping out apparatus comprising a pair of alined spaced heads having adjustable annular stave-receiving seats, a series of radially disposed shiftable eXpansion blocks mounted upon each head adapted to enter the ends of an assemblage of barrel staves, and a reciprocative expander head engageable with each series of blocks whereby they are forced against said assemblage of staves.

5. A stave tapping out apparatus comprising a pair of axially alined spaced heads having annular stave-receiving seats, a series of radially disposed expansion blocks pivoted to each head, the expansion blocks being provided with obliquely disposed cam faces and tappet fingers, and reciprocative chucking disks arranged to engage the cam faces and tappet fingers whereby the blocks are expanded and contracted.

6. A stave tapping out apparatus-comprising a pair of rotatory spindles having 7. A stave tapping out apparatus c0mprising a pair of alined spaced heads,a series of pivoted radially disposed expansion blocks mounted upon each head adapted to enter the ends of an assemblage of barrel staves, and a yieldable reciprocative expander head engageable with each series of blocks whereby they are forced against said assemblage of staves.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee in the county of Milwaukee and State of Wisconsin in the presence of two witnesses.

FRANK A. WILKES.

Witnesses:

Jos. C. RIEDEL, PETER SCHUBERT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. 0. 

